Brompton 13/16T BWR 6-spd Sprocket Set, 9-Spline, 3/32” Stem Shimano Ultegra FC-R8100 chainrings are

Shimano Ultegra FC-R8100 chainrings are constructed with high quality aluminum and are compatible with FC-R8100 and FC-8100-P 2x 12-speed cranksets

4% lighter than the closest competitor and sharing geometry and kinematics from our World Cup ready Epic 8 mountain bike

extra layers

no matter how far you plan to go

Brompton 13/16T BWR 6-spd Sprocket Set, 9-Spline, 3/32” Stem Shimano Ultegra FC-R8100 chainrings areReplacement sprocket disc set for the Brompton BWR 6 speed. Includes 13 tooth and 16 tooth sprockets, rear sprocket circlip (for driver), spacer, and nylon chain guide disc. This has come stock on all Brompton 6 speeds since January 2009. If you are replacing these sprockets, it is highly recommended that you also replace the chain as the sprockets and chain wear together and become a matched set over time.